I am actually surprised more haven't chimed in on this, when I was considering buying a new helmet after admiring the Oxy on our trip, I also considered all the hype of the Mission helmet and admit in the end I never tried one on or looked at it. I did however read up on it and although I for one feel a heated shield a must especially on bitter cold days especially without any sun and same goes for evenings because that's when you find the fog or frost starts to creep in from the outer edges of the shield, and in their specs it said "reduces fogging" if I remember correctly, not prevents and I know there are helmets out there that work without heated shields and people who have luck without them as well but IMO.... no matter what the helmet claims, Id rather have the heated shield....as long as its working LOL